Description
The Special Tapping Point (T-17) is very helpful to scoop and drill the wood
for more tightly hold and can screw directly without pre-drill ,
with the best quality “DEKS” EPDM rubber washers , no conductivity ,
uv protection , more effective leakage proof.

ST Corrugate sheet screw1

ST Corrugate sheet screw2

ST Corrugate sheet screw3